Faster uptake of Roundup into the weed. Rainfast in 2 hours, will not wash off, more killing power into the root. Use in and around fences, trees, driveways, flower beds, walkways, shrubs, lawn renovation, and vegetable garden preparation. Mix 1.5 to 2.5 oz per gallon. One quart makes 21 Gal of spray. Contains: 41 percent ISO Propylamine salt of glyphosate.